devel/py-virtualenvwrapper: update 4.8.4 -> 6.1.1

PR: 294782
Author: Hiroo Ono <hiroo.ono+freebsd@gmail.com>
Reviewed-by: Jonathan Chen <jonc@chen.org.nz>
Approved-by: nivit (maintainer timeout)
Changes: https://github.com/python-virtualenvwrapper/virtualenvwrapper/releases#release-6.0.0

		https://github.com/python-virtualenvwrapper/virtualenvwrapper/releases#release-6.1.1